Granted Patent
Utility
US 4,487,899 · App. 06/421,626
Reduced polymer buildup in condenser of reactor vessel
Inventor:
Donald White
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Sep 22, 1982
Inventor
Donald White
Assignee (at issue)
B. F. Goodrich Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.